首页
登录
职称英语
Today, most countries in the world have canals. Some canals, such as the Sue
Today, most countries in the world have canals. Some canals, such as the Sue
游客
2023-11-04
58
管理
问题
Today, most countries in the world have canals. Some canals, such as the Suez or the Panama,【C1】______ships weeks of time by making their voyage a thousand miles shorter. Other canals permit boats to reach cities that are not located on the coast.【C2】______other canals drain lands where there is too much water, help or【C3】______fields where there is not enough water.
The【C4】______of a canal depends on the kind of boats going through it. The canal must be wide enough to permit two of the【C5】______boats using it to【C6】______each other easily. It must be deep enough to leave about two feet of water【C7】______the keel of the largest boat using the canal. Some canals have sloping sides, while others have sides that are nearly【C8】______. Canals that are cut through rock can have nearly vertical sides. 【C9】______, canals with earth banks may【C10】______if the angle of their sides is too steep. Some canals are lined with brick, stone, or concrete to keep the water【C11】______soaking into the mud. This also permits ships to go at【C12】______speeds, since they cannot make the banks fall in by【C13】______up the water. In small canals with mud banks, ships and barges(大平底船)must【C14】______their speed.
When the canal goes【C15】______different levels of water, the ships must be【C16】______or lowered from one level to the other. This is generally done by【C17】______of locks. If a ship wants to go up to higher water, the lower end of the lock opens to let the boat in. Then this gate closes, and the water is let into the lock chamber from the upper level. This raised the level of the water in the lock【C18】______it is the same as the upper level of water. Now the upper gates can be opened to【C19】______the ship into the higher water. Sometimes a canal contains a series of locks when the【C20】______in levels is very great. [br] 【C15】
选项
A、across
B、along
C、down
D、through
答案
D
解析
从所填词后的different levels of water可推知,运河流经高低不同的水面,故答案为[D]through。go through意为“经历,通过”。go across是“渡过,越过”的意思,多指从物体表面通过,故排除[A];[B]along和[C]down作介词时均意为“沿着”,与后面的different levels of water不搭配。
转载请注明原文地址:http://tihaiku.com/zcyy/3156973.html
相关试题推荐
Aseriesofborderincidentswould______leadthetwocountriestowar.A、inevitab
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
随机试题
假如你是班长,你们学校将举行一次英语讲座,请根据下列提示用英语拟一份60个单词左右的口头通知,将有关英语讲座的情况告诉同学们。(请不要逐字逐句翻译。)
Minipresentation’—about6minutesInthispartofthetestyouareaskedtogi
CustomerTargetingFindingandkeepingloyaland
【S1】[br]【S5】A、revealsB、exposesC、incursD、entailsCrevealsachangeinattitu
Thesedays,peoplewhodo【C1】______workoftenreceivefarmoremoneythanpe
下列有关计算租赁负债后续计量的表述正确的有( )。 Ⅰ.在租赁期开始日后,确
A.既能清热解毒,又能凉血止血,杀虫B.既能杀虫,又能凉血止血C.既能杀虫,又能
成人静脉采血时,常用的采血部位是( )。A.肘部静脉 B.手背静脉 C.股
材料: 国际与本土 张颐武 春节的价值和象征性的意义都是不可估量的,
购买股权导致上市公司取得被投资企业控股权的,其资产总额以()为准。A:被投资企业
最新回复
(
0
)